I have found that what most significantly affects how signal-to-noise is heard, is cartridge/arm set up and alignment. Since acheiving what has to be perfection, or awful close to it, I am able to listen to old lp's that were unlistenable before. Try getting a Mintlp tractor, and see how much less surface noise intrudes in your lp listening.
Regards, and good listening,
Dan
Regards, and good listening,
Dan